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Maisem Ali 6fecc16c3b ipn/ipnlocal: do not process old status messages received out of order
When `setWgengineStatus` is invoked concurrently from multiple
goroutines, it is possible that the call invoked with a newer status is
processed before a call with an older status. e.g. a status that has
endpoints might be followed by a status without endpoints. This causes
unnecessary work in the engine and can result in packet loss.

This patch adds an `AsOf time.Time` field to the status to specifiy when the
status was calculated, which later allows `setWgengineStatus` to ignore
any status messages it receives that are older than the one it has
already processed.

Updates tailscale/corp#2579

Signed-off-by: Maisem Ali <maisem@tailscale.com>
2022-03-26 20:23:50 -07:00
.bencher bencher: add config to suppress failures on benchmark regressions. 2021-10-01 16:16:02 -07:00
.github .github: Bump actions/checkout from 2 to 3 2022-03-22 16:07:00 -07:00
atomicfile atomicfile: don't Chmod on windows 2020-07-15 12:31:40 -07:00
chirp all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
client/tailscale client/tailscale, cmd/tailscale, localapi: add 'tailscale nc' 2022-03-24 10:28:53 -07:00
cmd cmd/tailscale: write fewer known_hosts, resolve ssh host to FQDN early 2022-03-25 15:17:27 -07:00
control net/netutil: move some net utils from control/controlhttp to netutil 2022-03-24 09:56:10 -07:00
derp derp: set Basic Constraints on metacert 2022-03-17 15:38:21 -07:00
disco types/key: export constants for key size, not a method. 2021-10-29 17:39:04 -07:00
docs fix minor typo 2021-11-16 11:03:43 -08:00
envknob envknob, ipn/ipnlocal: add SSH admin kill switch 2022-03-23 15:40:30 -07:00
health net/dns: add health check for particular broken-ish Linux DNS config 2022-02-16 10:40:04 -08:00
hostinfo tsnet: set Hostinfo.Package to "tsnet" on use 2022-03-25 09:26:02 -07:00
internal/tooldeps util/deephash: move internal/deephash to util/deephash 2021-07-02 21:33:02 -07:00
ipn ipn/ipnlocal: do not process old status messages received out of order 2022-03-26 20:23:50 -07:00
kube all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
log all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
logpolicy all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
logtail all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
metrics all: use testingutil.MinAllocsPerRun 2021-10-28 12:48:37 -07:00
net cmd/tailscale: write fewer known_hosts, resolve ssh host to FQDN early 2022-03-25 15:17:27 -07:00
packages/deb all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
paths cmd/tailscaled: default to userspace-networking mode on gokrazy, set paths 2022-03-01 20:34:45 -08:00
portlist envknob: add new package for all the strconv.ParseBool(os.Getenv(..)) 2022-01-24 11:51:23 -08:00
prober prober: support adding key/value labels to probes. (#4250) 2022-03-22 13:45:11 -07:00
safesocket safesocket: add ConnectionStrategy, provide control over fallbacks 2021-12-09 15:46:38 -08:00
scripts scripts: install gnupg only when apt-key is needed 2022-03-17 15:11:25 -07:00
smallzstd smallzstd: new package that constructs zstd small encoders/decoders. 2020-07-02 16:13:06 -07:00
ssh/tailssh ssh/tailssh, tailcfg: add more HoldAndDelegate expansions, document 2022-03-22 17:56:45 -07:00
syncs syncs: use TryLock and TryRLock instead of unsafe 2022-03-17 10:57:41 -07:00
tailcfg ssh/tailssh, tailcfg: add more HoldAndDelegate expansions, document 2022-03-22 17:56:45 -07:00
tempfork/pprof tempfork/wireguard-windows: remove the old windows firewall code now that we are no 2021-08-26 15:00:45 -07:00
tool tool/go: add wrapper to download and use go.toolchain.rev go version. 2022-01-04 09:45:29 -08:00
tsconst net/interfaces/windows: update Tailscale interface detection logic to 2021-11-08 07:44:33 -08:00
tsnet tsnet: set Hostinfo.Package to "tsnet" on use 2022-03-25 09:26:02 -07:00
tstest all: use cibuild.On 2022-03-18 15:19:26 -07:00
tstime tstime/mono: fix Before function comment 2022-03-05 15:05:57 -08:00
tsweb tsweb: add PrometheusVar, for vars that want to output varz themselves. 2022-03-21 12:33:18 -07:00
types types/views: rename Generic to Unwrap 2022-03-17 14:41:57 -07:00
util all: use cibuild.On 2022-03-18 15:19:26 -07:00
version version: use Go 1.18's git stamping as default implementation 2022-03-16 14:53:51 -07:00
wf all: use any instead of interface{} 2022-03-17 11:35:09 -07:00
wgengine ipn/ipnlocal: do not process old status messages received out of order 2022-03-26 20:23:50 -07:00
words words: more hamsters, less hampsters (#3938) 2022-02-14 15:15:30 -05:00
.gitattributes .: add .gitattributes entry to use Go hunk-header driver 2021-12-03 17:56:02 -08:00
.gitignore Makefile: update make spk target to use the new go spk builder 2022-01-21 12:27:00 -08:00
api.md api: document preauthorized auth keys 2022-02-17 14:27:39 -08:00
AUTHORS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
build_dist.sh tool/go: add wrapper to download and use go.toolchain.rev go version. 2022-01-04 09:45:29 -08:00
build_docker.sh tool/go: add wrapper to download and use go.toolchain.rev go version. 2022-01-04 09:45:29 -08:00
CODE_OF_CONDUCT.md Add a code of conduct. 2020-02-10 22:16:30 -08:00
Dockerfile Dockerfile: require Go 1.18 2022-03-16 12:45:28 -07:00
Dockerfile.base Dockerfile.base: update to alpine:3.15 2022-01-07 07:33:25 -08:00
go.mod cmd/tailscale/cli: add start of 'ssh' subcommand 2022-03-24 21:43:42 -07:00
go.sum cmd/tailscale/cli: add start of 'ssh' subcommand 2022-03-24 21:43:42 -07:00
go.toolchain.branch go.toolchain.branch: upgrade to Go 1.18 2022-03-16 12:45:28 -07:00
go.toolchain.rev go.toolchain.rev: pick up httptest race fix 2022-03-25 09:53:10 -07:00
LICENSE LICENSE: Reformat for Github 2021-01-24 16:20:22 -08:00
Makefile Makefile: add tidy target 2022-03-21 11:06:13 -07:00
PATENTS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
pull-toolchain.sh go.toolchain.rev: add update script 2022-01-10 14:55:04 -08:00
README.md README.md: update current Go release 2022-03-16 12:45:28 -07:00
SECURITY.md Add a SECURITY.md for vulnerability reports. 2020-02-11 10:26:41 -08:00
shell.nix add nix-shell boilerplate (#1028) 2020-12-29 12:17:03 -05:00
staticcheck.conf staticcheck.conf: remove unnecessary warning 2021-06-22 12:26:13 -07:00
version-embed.go go.toolchain.rev: add Go toolchain rev, tool to print it out 2022-01-03 11:56:27 -08:00
VERSION.txt VERSION.txt: This is 1.23. 2022-02-23 15:51:28 -08:00

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains all the open source Tailscale client code and the tailscaled daemon and tailscale CLI tool. The tailscaled daemon runs on Linux, Windows and macOS, and to varying degrees on FreeBSD, OpenBSD, and Darwin. (The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.)

The Android app is at https://github.com/tailscale/tailscale-android

The Synology package is at https://github.com/tailscale/tailscale-synology

Using

We serve packages for a variety of distros at https://pkgs.tailscale.com .

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers that are not open source.

Building

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

We only guarantee to support the latest Go release and any Go beta or release candidate builds (currently Go 1.18) in module mode. It might work in earlier Go versions or in GOPATH mode, but we're making no effort to keep those working.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.